18955426 has 16 divisors (see below), whose sum is σ = 34205760. Its totient is φ = 7696080.

The previous prime is 18955403. The next prime is 18955451. The reversal of 18955426 is 62455981.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35365 + ... + 35896.

It is an arithmetic number, because the mean of its divisors is an integer number (2137860).

Almost surely, 2^18955426 is an apocalyptic number.

18955426 is a deficient number, since it is larger than the sum of its proper divisors (15250334).

18955426 is a wasteful number, since it uses less digits than its factorization.

18955426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71289.

The product of its digits is 86400, while the sum is 40.

The square root of 18955426 is about 4353.7829527894. The cubic root of 18955426 is about 266.6313324711.

The spelling of 18955426 in words is "eighteen million, nine hundred fifty-five thousand, four hundred twenty-six".